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Table 6 Percentage of lateral dose profile points passing the three Γ-criteria with the initial electron beam energy fixed at 6.26 MeV, the energy FWHM at 0.150 MeV and beam divergence at default value of 0.The number of histories is 2.5 × 107

From: Linac photon beam fine-tuning in PRIMO using the gamma-index analysis toolkit

Focal Spot FWHM (cm)Average Dose Uncertainty (%)3 % /3mm (%)2 % /2mm (%)1 % /1mm (%)
0.107.9100.098.867.7
0.127.9100.0100.068.9
0.147.9100.099.472.1
0.157.9100.0100.078.9
0.167.9100.093.875.2